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Emission of Hg from Coal Consumption in China and Its Summer time Deposition Calculated by CMAQ-Hg
- Source :
- Terrestrial, Atmospheric and Oceanic Sciences, Vol 20, Iss 2, p 325 (2009)
- Publication Year :
- 2009
- Publisher :
- Chinese Geoscience Union, 2009.
-
Abstract
- Mercury (Hg) emission from coal combustion in China is estimated in this study and its deposition calculated using the Models-3 Community Multi-scale Air Quality (CMAQ-Hg) modeling system with meteorological fields calculated by MM5. Three kinds of Hg speciation were included in the models: particle-bound mercury (PHg), gaseous elemental mercury (GEM) and gas oxidized mercury (RGM). Much of the Hg was released as RGM from coal combustion in China, accounting for 58.4 - 66.8% of total emissions. The large proportion of RGM in overall Hg emission also led to large Hg deposition. Based on simulations, Hg deposition originating from coal combustion reaches as high as 2 - 6 mu g m(-2) month(-1) in southwestern China (particularly Guizhou Province), the industrialized and populated regions of east central and coastal China, and Liaoning Province in the northeast.
- Subjects :
- Atmospheric Science
Air pollution
Hg emission
Coal combustion products
chemistry.chemical_element
lcsh:G1-922
Oceanography
medicine.disease_cause
Earth and Planetary Sciences (miscellaneous)
medicine
Coal
Deposition
Air quality index
Chemical speciation
business.industry
lcsh:QE1-996.5
Elemental mercury
Mercury (element)
Coal combustion
lcsh:Geology
chemistry
Environmental chemistry
Environmental science
CMAQ-Hg
business
lcsh:Geography (General)
CMAQ
Subjects
Details
- Language :
- English
- ISSN :
- 23117680 and 10170839
- Volume :
- 20
- Issue :
- 2
- Database :
- OpenAIRE
- Journal :
- Terrestrial, Atmospheric and Oceanic Sciences
- Accession number :
- edsair.doi.dedup.....fcd4f4925bed7eaf3f84092272b11d2f